This iconic clock tower is the largest in the Philippines.

The ruins on a deserted tropical island in the Philippines bear the scars of WWII.

Five miles of underground river link lake to ocean.

This tiny island protects a number of rare bird species by only allowing visitors to set foot on the beach.

A vast personal collection of World War II artifacts unearthed over many years by a father-son duo.

Sometimes known as the little Niagara Falls of the Philippines.

This massive Roman Catholic rosary is composed entirely of wood.

One of the word's deepest gorges is also tied to a fantastic legend.

At 16,627 feet above sea level, this unstaffed station is the highest in the world.

The original resting place of Queen Cleopatra and Mark Antony's only daughter.

An extraordinary mix of Phoenician, Roman, early Christian, and Byzantine ruins beautifully set overlooking the Mediterranean.

This massive monument towers over the city as a constant reminder of the lives lost during Algeria's hard-won war for independence.

Founded as a refugee camp, now a popular tourist spot.

Reaching this rock formation involves a hike through rocky rapids and springs where wild turtles reproduce.

Along the most northwestern point in Africa is an ancient cave surrounded by legends.

The city walls of Salé lead to the ruins of this seaside "bastion of tears."

Morocco’s modern capital was once a haven for Barbary pirates, who went so far as to establish a republic of their own.

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

A fortified city, home to a remaining population of five families

A Moroccan getaway in the mountain range that plays the Himalayas' stunt double.

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

Warrior training: The Indonesian tourist trap.

Site of the largest volcanic eruption in the last 25 million years, one which may have nearly wiped out humanity altogether.

One of Indonesia's tallest, this waterfall takes a 390-foot plunge into the Lake Toba caldera.